Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses

11. 03. 2011. @ Bucharest-Magurele

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Nuclear Coherent Population Transfer with X-Ray Laser Pulses

~One Step towards Nuclear Quantum Optics

Max Planck Institute for Nuclear Physics, Germany

Wen-Te Liao+

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Supervised by

Dr. Adriana PálffyProf. Dr. Christoph H. Keitel

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 2

Motivation-Control the nuclear state

3

1

2

isomer state96.57 keV

triggering level656.90 keV

324.47 keV

97 Tc

Nuclear Coherent Population Transfer (NCPT)

Stokespump

isomer

triggering

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 3

Motivation-Nuclear Battery

K. W. D. Ledingham, P. McKenna, and R. P. Singhal,Science 300, 1107 (2003)

Stokes

pump isomer state

ground state

Store very large

quantities of energy

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 4

Drive MeV transition with 10keV photon

XFEL

Photon energy ~10 keV

Nuclear states

0

~10 keV

~100 keV

> MeV

T. Tajima, Report on the ELI Science, p.14 (2009).T. J. Bürvenich, J. Evers and C. H. Keitel, PRL 96, 142501 (2006).

Blue shift

Accelerated

Nuclei !!

γ

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 5

Ion accelerator and XFEL are NOT put together now

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 6

ELI will put compact ion-accelerators and Table-Top-XFELs together

T T-XFEL

M. Fuchs et al., Nature Phys. 5, 826 (2009).compact ion-accelerator

M. Dunne, Science 312, 374 (2006)

NCPT

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 7

STIRAP

3

1

2

StokesPump

pS

delay

K. Bergmann, H. Theuer and B. W. Shore, RMP. 70, 1003 (1998).

p S

p S

stimulated Raman adiabatic passage (STIRAP)

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 8

XFEL

Temporal coherence is low.Coherence time ~ 0.2 fs

The Technical Design Report of the European XFEL

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 9

Seeded XFEL (SXFEL)

E. L. Saldin et al., Nucl. Instrum. Meth. A 475, 357 (2001).

transversely and temporarily coherent

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 10

XFEL Oscillator (X-FELO)

K.-J. Kim, Y. Shvyd’ko and S. Reiche, PRL 100, 244802 (2008).Y. V. Shvyd’ko et al., Nature Phys. 6, 196 (2010)

transversely and temporarily coherent

Diamond

DiamondReflectivity ~ 100%

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 11

Two Schemes

Nuclear beam

SP

Nuclear beam

S

PCross One Color Scheme

Central frequency ofP and S are the same.

Parallel Two Color Scheme

Central frequency ofP and S are different.

1 P

1 PCos

1 P

1 S

γ

γ

W.-T. Liao, A. Pálffy, C. H. Keitel, arXiv:1011.4423v1.

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 12

Results for One-Color Scheme

p p

S S

I I

I I

Increased 22

W.-T. Liao, A. Pálffy, C. H. Keitel, arXiv:1011.4423v1.

Fully coherent XFEL:Photon energy = 25 keVBandwidth = 2 meV

5 < γ < 36

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 13

Conclusion

NCPT can be observed with laser peak intensity > . 18 210 /W cm

ELI-NP provide very unique stage for NCPT.

W.-T. Liao, A. Pálffy, C. H. Keitel, arXiv:1011.4423v1.

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Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 14

Acknowledgement

Dr. Adriana Pálffy

Prof. Dr. Christoph H. Keitel

Wen-Te Liao@ Magurele 11. 03. 2011 Nuclear Coherent Population Transfer with X-Ray Laser Pulses 15

Thanks for your attention